In Partnership with William K. Kohrs Memorial Library

View instructions
The CDL general knowledge test is required to be taken by all CDL applicants. The Montana CDL test consists of 50 questions. To pass, you must correctly answer at least 40 questions (80%). The general knowledge test covers the contents of the Montana CDL Manual. All CDL applicants (Class A, B and C) must study the following sections: Driving Safely, Transporting Cargo Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Vehicle Inspection Test, Basic Control Skills Test, Road Test. In addition, the Class A CDL test will include questions based on the Combination Vehicles section. Take this CDL practice test now to prepare for the actual MT general knowledge test! To get your CDL, you must pass both the knowledge and skills tests. CDL knowledge tests include: General Knowledge, Passenger Transport, Air Brakes, Combination Vehicles, Hazardous Materials, Tanker Vehicles, Doubles/Triples, School Bus, Firefighter. Depending on what class of license (A, B or C) and endorsements you need, you must take one or more knowledge tests. A special endorsement is also required to drive certain types of vehicles. The following endorsements may be used with a Class A, B or C CDL: HazMat (H), Tank Vehicles (N), Tank Vehicles Transporting Hazardous Materials (X) and Passenger Transport (P). The School Bus endorsement (S) is only available for Class A or B CDL, and the Doubles/Triples endorsement (T) is only available for Class A driver's licenses.
1. On a tractor-trailer equipped with a trailer brake hand valve, the hand valve can be used to:
keep from rolling back.
hold compressed air.
reduce the chance of the front wheels skidding.
prevent movement of cargo.
2. When parked on the side of the road, you should:
use the 4-way emergency flashers.
flash your brake lights.
activate the right turn signal.
turn off all lights.
3. The posted speed limit:
is only a suggestion.
should only be exceeded when passing other vehicles.
may only be exceeded when driving in rural areas.
should never be exceeded.
4. When driving in a construction zone, if a construction worker is near the road, you should:
maintain a constant speed.
speed up.
come to a complete stop.
further reduce your speed.
5. ______ is operating a motor vehicle with the intent of doing harm to others.
Road rage
Aggressive driving
Excessive driving
All of the above.
6. If you are driving a 30 foot vehicle at 35 mph, you should leave at least _______ between your vehicle and the vehicle in front of you.
3 seconds
2 seconds
1 seconds
4 seconds
7. Combination vehicles usually require _________ single commercial vehicles.
more driving skill than
less driving skill than
the same level of skill as
None of the above.
8. Which of the following is a tip to follow so you won't become a distracted driver?
Adjust all vehicle controls and mirrors while driving.
Engage in complex conversations with others.
Turn on all communication devices.
None of the above.
9. How many drinks per hour can be handled by the liver?
About 2 drinks per hour.
About 1 drink per hour.
About 3 drinks per hour.
About 4 drinks per hour.
10. Railroad crossings with steep approaches:
are the safest type of railroad crossing.
require drivers to increase their speed before crossing the tracks.
can cause your unit to hang up on the tracks.
require drivers to shift gears while crossing the tracks.
Page 1 of 5
Next page

MT CDL Knowledge Test

Number of questions: 50
Correct answers to pass:40
Passing score:80%
Share This Online CDL Test
Rate this CDL Knowledge Test
4.8 out of 5
based on 400 votes